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MMSZ5261BT1

MMSZ5261BT1 Description

The MMSZ5261BT1 from onsemi is a 47V Zener diode designed for surface-mount applications, packaged in a compact SOD-123 form factor. With a 500 mW power dissipation rating and a ±5% tolerance, this diode ensures reliable voltage regulation in precision circuits. It features a low reverse leakage current of 100 nA at 36 V, enhancing efficiency in low-power designs. The forward voltage (Vf) is capped at 900 mV at 10 mA, making it suitable for applications requiring minimal voltage drop. Its maximum impedance (Zzt) of 105 Ohms ensures stable performance under varying load conditions.

MMSZ5261BT1 Features

• High Voltage Regulation: Nominal Zener voltage of 47 V with tight tolerance (±5%) for precise voltage clamping.
• Low Leakage Current: 100 nA at 36 V minimizes power loss in standby or idle modes.
• Compact & Robust: SOD-123 package (Tape & Reel) is ideal for space-constrained PCB designs.
• Wide Operating Range: Suitable for industrial and automotive environments with REACH compliance and MSL 1 (Unlimited) moisture sensitivity.
• Efficient Thermal Performance: 500 mW max power dissipation ensures reliability in high-stress applications.

MMSZ5261BT1 Applications

• Voltage Regulation: Used in power supplies, voltage references, and precision analog circuits requiring stable 47V clamping.
• Circuit Protection: Protects sensitive components from voltage spikes in communication systems, automotive electronics, and industrial controls.
• Signal Conditioning: Ideal for waveform clipping and limiting in audio and RF circuits.
• Portable Electronics: Low leakage and small footprint make it suitable for battery-powered devices like IoT sensors and wearables.

Conclusion of MMSZ5261BT1

The MMSZ5261BT1 stands out as a high-performance Zener diode, offering precision voltage regulation, low leakage, and robust packaging. While marked as obsolete, its reliability and efficiency make it a viable choice for legacy designs or applications requiring proven performance. Engineers can leverage its compact size and low power loss for demanding voltage clamping tasks across industrial, automotive, and consumer electronics. For new designs, verifying alternative active models from onsemi is recommended.